summaryrefslogtreecommitdiff
blob: 42f4d66b559784adceb482da927ea394b52db773 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
# Copyright 1999-2004 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/eclass/python.eclass,v 1.20 2005/07/06 20:23:20 agriffis Exp $
#
# Author: Alastair Tse <liquidx@gentoo.org>
#
# A Utility Eclass that should be inherited by anything that deals with
# Python or Python modules.
#
# - Features:
# python_version()        - sets PYVER/PYVER_MAJOR/PYVER_MINOR
# python_tkinter_exists() - Checks for tkinter support in python
# python_mod_exists()     - Checks if a python module exists
# python_mod_compile()    - Compiles a .py file to a .pyc/.pyo
# python_mod_optimize()   - Generates .pyc/.pyo precompiled scripts
# python_mod_cleanup()    - Goes through /usr/lib*/python* to remove
#                           orphaned *.pyc *.pyo
# python_makesym()        - Makes /usr/bin/python symlinks

inherit alternatives



__python_eclass_test() {
	__python_version_extract 2.3
	echo -n "2.3 -> PYVER: $PYVER PYVER_MAJOR: $PYVER_MAJOR"
	echo " PYVER_MINOR: $PYVER_MINOR PYVER_MICRO: $PYVER_MICRO"
	__python_version_extract 2.3.4
	echo -n "2.3.4 -> PYVER: $PYVER PYVER_MAJOR: $PYVER_MAJOR"
	echo " PYVER_MINOR: $PYVER_MINOR PYVER_MICRO: $PYVER_MICRO"
	__python_version_extract 2.3.5
	echo -n "2.3.5 -> PYVER: $PYVER PYVER_MAJOR: $PYVER_MAJOR"
	echo " PYVER_MINOR: $PYVER_MINOR PYVER_MICRO: $PYVER_MICRO"
	__python_version_extract 2.4
	echo -n "2.4 -> PYVER: $PYVER PYVER_MAJOR: $PYVER_MAJOR"
	echo " PYVER_MINOR: $PYVER_MINOR PYVER_MICRO: $PYVER_MICRO"
}

#
# name:   python_disable/enable_pyc
# desc:   tells python not to automatically recompile modules to .pyc/.pyo
#         even if the timestamps/version stamps don't match. this is
#         done to protect sandbox.
#
# note:   supported by >=dev-lang/python-2.2.3-r3 only.
#
python_disable_pyc() {
	export PYTHON_DONTCOMPILE=1
}

python_enable_pyc() {
	unset PYTHON_DONTCOMPILE
}

python_disable_pyc

#
# name:   python_version
# desc:   run without arguments and it will export the version of python
#         currently in use as $PYVER
#

__python_version_extract() {
	verstr=$1
	export PYVER_MAJOR=${verstr:0:1}
	export PYVER_MINOR=${verstr:2:1}
	export PYVER_MICRO=${verstr:4}
	export PYVER="${PYVER_MAJOR}.${PYVER_MINOR}"	
}

python_version() {
	local tmpstr
	python=${python:-/usr/bin/python}
	tmpstr="$(${python} -V 2>&1 )"
	export PYVER_ALL="${tmpstr#Python }"
	__python_version_extract $PYVER_ALL
}

#
# name:   python_makesym
# desc:   run without arguments, it will create the /usr/bin/python symlinks
#         to the latest installed version
#
python_makesym() {
	alternatives_auto_makesym "/usr/bin/python" "python[0-9].[0-9]"
	alternatives_auto_makesym "/usr/bin/python2" "python2.[0-9]"
}

#
# name:   python_tkinter_exists
# desc:   run without arguments, checks if python was compiled with Tkinter
#         support.  If not, prints an error message and dies.
#
python_tkinter_exists() {
	if ! python -c "import Tkinter" >/dev/null 2>&1; then
		eerror "You need to recompile python with Tkinter support."
		eerror "That means: USE='tcltk' emerge python"
		echo
		die "missing tkinter support with installed python"
	fi
}

#
# name:   python_mod_exists
# desc:   run with the module name as an argument. it will check if a
#         python module is installed and loadable. it will return
#         TRUE(0) if the module exists, and FALSE(1) if the module does
#         not exist.
# exam:
#         if python_mod_exists gtk; then
#             echo "gtk support enabled
#         fi
#
python_mod_exists() {
	[ -z "$1" ] && die "${FUNCTION} requires an argument!"
	if ! python -c "import $1" >/dev/null 2>&1; then
		return 1
	fi
	return 0
}

#
# name:   python_mod_compile
# desc:   given a filename, it will pre-compile the module's .pyc and .pyo.
#         should only be run in pkg_postinst()
# exam:
#         python_mod_compile ${ROOT}usr/lib/python2.3/site-packages/pygoogle.py
#
python_mod_compile() {
	# allow compiling for older python versions
	if [ -n "${PYTHON_OVERRIDE_PYVER}" ]; then
		PYVER=${PYTHON_OVERRIDE_PYVER}
	else
		python_version
	fi

	if [ -f "$1" ]; then
		python${PYVER} -c "import py_compile; py_compile.compile('${1}')" || \
			ewarn "Failed to compile ${1}"
		python${PYVER} -O -c "import py_compile; py_compile.compile('${1}')" || \
			ewarn "Failed to compile ${1}"
	else
		ewarn "Unable to find ${1}"
	fi
}

#
# name:   python_mod_optimize
# desc:   if no arguments supplied, it will recompile all modules under
#         sys.path (eg. /usr/lib/python2.3, /usr/lib/python2.3/site-packages/ ..)
#         no recursively
#
#         if supplied with arguments, it will recompile all modules recursively
#         in the supplied directory
# exam:
#         python_mod_optimize ${ROOT}usr/share/codegen
#
python_mod_optimize() {
	local myroot
	# strip trailing slash
	myroot="${ROOT%/}"

	# allow compiling for older python versions
	if [ -n "${PYTHON_OVERRIDE_PYVER}" ]; then
		PYVER=${PYTHON_OVERRIDE_PYVER}
	else
		python_version
	fi

	# set opts
	if [ "${PYVER}" = "2.2" ]; then
		compileopts=""
	else
		compileopts="-q"
	fi

	ebegin "Byte compiling python modules for python-${PYVER} .."
	python${PYVER} ${myroot}/usr/lib/python${PYVER}/compileall.py ${compileopts} $@
	python${PYVER} -O ${myroot}/usr/lib/python${PYVER}/compileall.py ${compileopts} $@
	eend $?
}

#
# name:   python_mod_cleanup
# desc:   run with optional arguments, where arguments are directories of
#         python modules. if none given, it will look in /usr/lib/python[0-9].[0-9]
#
#         it will recursively scan all compiled python modules in the directories
#         and determine if they are orphaned (eg. their corresponding .py is missing.)
#         if they are, then it will remove their corresponding .pyc and .pyo
#
python_mod_cleanup() {
	local SEARCH_PATH myroot

	# strip trailing slash
	myroot="${ROOT%/}"

	if [ $# -gt 0 ]; then
		for path in $@; do
			SEARCH_PATH="${SEARCH_PATH} ${myroot}/${path#/}"
		done
	else
		for path in ${myroot}/usr/lib*/python*/site-packages; do
			SEARCH_PATH="${SEARCH_PATH} ${path}"
		done
	fi

	for path in ${SEARCH_PATH}; do
		einfo "Cleaning orphaned Python bytecode from ${path} .."
		for obj in $(find ${path} -name *.pyc); do
			src_py="${obj%c}"
			if [ ! -f "${src_py}" ]; then
				einfo "Purging ${src_py}[co]"
				rm -f ${src_py}[co]
			fi
		done
		# attempt to remove directories that maybe empty
		for dir in $(find ${path} -type d | sort -r); do
			rmdir ${dir} 2>/dev/null
		done
	done
}